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Toward a hardware man-in-the-middle attack on PCIe bus

机译：对PCIe巴士的硬件人体中攻击

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摘要

The growing need for high rate communication of recent embedded systems is leading to the adoption of the PCIe protocol (Peripheral Component Interconnect express) as an internal data bus. This technology is used in some recent smartphones, and will probably be adopted globally in the next few years. The communication between the processor (in the SoC) and its memory through the PCIe bus represents an important source of information for criminal investigations. In this paper, we present a new attack vector on PCIe based on a hardware Man-in-the-Middle. This system allows real-time data analysis, data-replay, and a copy technique inspired by the shadow-copy principle. Through this one, it is possible to locate, duplicate, and replay sensitive data. The main challenge here is to develop an architecture compliant with PCIe protocol constraints, such as response time, frequency, and throughput, in order to be non-detectable to the communication parts. We designed a proof of concept of an emulator based on a computer with PCIe 3.0 bus and a Stratix 5 FPGA with an endpoint PCIe port as a development target. (C) 2020 Elsevier B.V. All rights reserved.
机译：对最近嵌入式系统的高速通信的越来越多的需求导致PCIe协议（外围分量互连Express）作为内部数据总线。这项技术用于一些最近的智能手机，可能在未来几年内全局通过。处理器之间的通信（在SOC中）及其通过PCIe总线的存储器代表了刑事调查的重要信息来源。在本文中，我们在基于硬件中间的一个新的PCIe上提出了一个新的攻击向量。该系统允许实时数据分析，数据重放和由影子复制原理启发的复制技术。通过这个，可以定位，重复和重放敏感数据。这里的主要挑战是开发符合PCIe协议约束的架构，例如响应时间，频率和吞吐量，以便对通信部分不可检测。我们设计了基于带有PCIe 3.0总线的计算机和具有Endpoint PCIe端口作为开发目标的计算机的概念概念。 （c）2020 Elsevier B.v.保留所有权利。

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